(1) Department of Inorganic and Analytical Chemistry, L. Eötvös University, Hungary;(2) Department of Organic Chemistry, L. Eötvös University, 1117 Budapest, Pázmány Péter sétány 1/A, Hungary
Abstract:
A relatively high and unexpected increase of inclusion complex stabilities could be detected in some half dissociated dicarboxylic acids (HA− ions) with intramolecular H-bonding. The intermolecular hydrogen bonds between the protruding functional groups of the guest and the hydroxy groups of the host are known to enhance the stability of the cyclodextrin (CD) inclusion complexes. The enhanced inclusion of HA− species is promoted, not by the intermolecular but by the intramolecular H-bond indirectly, resulting in a compact shape of the guest with more favourable space filling.This revised version was published online in July 2005 with a corrected issue number.
